US3500771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burglar-proof lock device
Assignee: HARVEY D FISCHER
•
Filing: 1969-01-15
•
Granted: 1970-03-17
•
Expires: 1989-01-15
Abstract
No abstract record available.
Inventors
- 👤 Harvey D Fischer
- 👤 Nunzio J Palumbo
- 👤 Jack Macione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:37
CPC Classifications
E; E05; E05B; E05B17/00; E05B17/20; E05B17/2084; E05B17/2092; E05G; E05G1/00; E05G1/12; G; G07; G07F; G07F5/00; G07F5/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |